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DEPARTMENT OF NATURAL RESOURCES <br />DIVISION OF WATER RESOURCES <br />Bill Ritter, Jr. <br />Governor <br />James B. Martin <br />Executive Director <br />Dick Wolfe, P.E. <br />Director/State Engineer <br />February 11, 2010 <br />Mr. Jerry M. Nettleton RECE1VFn <br />Twenty Mile Coal Company FEB 112010 <br />29515 Routt County Road 27 <br />Oak Creek, CO 80467 Division of r:rludthcluou, <br />Mining and Safety <br />When replying please refer to: <br />FISH CREEK PIPELINE CROSSING <br />Water Division 6, Water District 57 <br />Subject: Construction of a Cofferdam Across Fish Creek <br />Dear Mr. Nettleton: <br />Thank you for submitting the documentation on the proposed temporary construction of a straw <br />flow barrier (cofferdam) across Fish Creek to facilitate construction of a water pipeline. This office has <br />reviewed the sequence of activities and the proposed construction of the cofferdam detailed in a letter <br />dated February 1, 2010 and we have no comments the proposed design of the cofferdam. <br />The owner is liable for the safety of the cofferdam and for any loss of life and/or damages caused <br />by a failure of the cofferdam in accordance with State Statutes. This letter does not relieve the owner <br />from this liability or from any other statutory obligation. Therefore, it is in the owner's best interest to <br />assure that the cofferdam is designed, operated and maintained in a manner such that the safety of <br />the cofferdam, downstream work, and the general public are not jeopardized. Also, permits from <br />other local and federal agencies may be required prior to the start of construction of this project. The <br />appropriate agencies should be contacted to determine which permits are required. <br />We appreciate that you contacted our office concerning this construction and if you have any <br />questions concerning this letter or other questions, please do not hesitate to contact me at <br />(303) 866-3585 ext. 8274. <br />Sincerely, <br />P. Paul Perri, P.E. <br />Design Review Engineer <br />xc: Erin Light, Division Engineer <br />John R. Blair, Dam Safety Engineer <br />Mark Haynes, Chief of the Safety of Dams Program <br />Uctanet Binns, Colorado Division of Reclamation. Mining & Safety <br />Office of the State Engineer <br />1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: 303-866-3581 • Fax: 303-866-3589 <br />www.water.state.co.us